Cannot edit Symbol Pin properties

I have created s symbol in DxDesigner and when I tried to go back and edit pin properties again, it does not let me select the pin and/or change. It seems like it behaves the same with other symbols and it acts like it is locked? The only property I can change is the pin# and it is only on some pins not all pins.

Which version of the tools are you using and in which editor are you editing the symbol? Is this a block symbol on the sheet or a library symbol? You will probably get a quicker answer by contacting customer support rather than this forum.